hello i can get my dt125r to rev past 12k and it pulls like a train through all gears beats my friends nsr125 and its not restricted and beats my friends aprilia 125mx it can do 80mph all ive done to mine is bigone front pipe pipercross panel filter with 8 motorcross 1 inch round filters put into the airbox to de-restrict it sounds great and i customised a vforce3 reed block off a yamaha 200cc blaster valve quad i still need to upjet as yet to a 250 or a 260 as i no it needs it but my power valve isnt fully open till 9k revs is the power valve wrong cheers